Vibrator



G. P. ELMEN.

VIBRATOR.

Patented May 4, 1920.

APPLICATION FIL ED JUNE 14, I918.

2 SHEETS-SHEET I.

INVENTOR Geo ryefl 17 Z1 21: n. "iz ATTORNEYS g G. P. ELMEN.

WBRATOK APPLICATION FILED JUNE 14.- 1918.

1,339,179. I Patented May 4, 1920.

2 SHEETSSHEET 2- INVENTOR GeoryeZEZZnen I 0 d ATTORNEYS GEORGE P. ELMEN,OF LINCOLN, NEBRASKA.

vrimnrron.

Specification of Letters Patent.

Patented Ma a, 1920.

Application filed June 14, 1918. Serial N'o. 240,045.

To all whom it may concern:

Be it known that I, GEORGE P. ELMEN, a citizen of the United States,residing at Lincoln, in the county of Lancaster and State of Nebraska,have invented certain new and useful Improvements in Vibrators, of whichthe following is a specification.

This invention has reference to certain new and useful improvements invibrators, especially those of the massage type and the inventionprimarily has for its object to provide a vibrator in which twodistinctly different strokes, one a percussion stroke and the other abrushing stroke, can be obtained or a combination of the said twostrokes may be had.

Another object of my invention is to provide, in a device of thecharacter stated, an improved construction of the controlling means forsetting the power transmission connections between the crank disk andthe applicator or plunger, that is simple and inexpensive in themanufacture thereof, by which the several adjustments can bepracticallyinstantly made for adapting theapplicator to the percussion stroke, thebrushing stroke, or' the combination or. mixed stroke.

With other objects in view that will hereinafter appear, my inventionembodies, in a vibrator of the character outlined, certain details; ofconstruction "and combination of parts specifically brought out in thefollowing description and the appended claims and illustrated in theaccompanying drawings, in which:

Figure 1 is a perspective view of my in- Vent1on. r

Fig. 2 is a longitudinal 'section thereof taken practically on the line2-2 on Fig. 3, parts being in elevation.-

Fig. 3 is a cross section thereof taken on the line 3-3 on Fig. 2, theshifting or controlling members of the power transmission connected withthe applicator arm, being positioned to impart a percussion stroke tothe said applicator arm.

Fig. fl: as detail cross section of the housing, the upper end of theapplicator or plunger and the stroke controller devices, the latterbeing. shown. as adjustedfor imparting the brushing motionto theplungeror applicator.

Fig. 5 is a similar view, the parts being adjusted for imparting thecombined brushmg and percussion stroke to the applicator.

Fig. 6 is a perspective view of the slotted head block. l i

Fig. 7 is a detail planview that illustrates the correlation of thecontrolling or head block turning member and-the driving member thatattaches to the crank diskand imparts movement to theheadblocks In thepracticalarrangement ofmy invention, the main or supporting casing 1, inwhich the driving (electric) -motor is mounted and which has the usualhandle, is of the conventional form, as-indicated in Figl. v y

The front section 2 of the casing supports the operating parts of thevibrator and to it is attached, by any suitable means, a housing 8 forthe power transmission devices that connect with the applicator orplunger arm 10, presently again referred to.

The housing 3 includes 'a; neck 6 in which the applicator arm 10 isreciprocably mounted in the usual way with' 'the lower end thereofextended beyond the said neck 6, as shown.

In my improved construction of vibrator, the upper end of the plunger orapplicator member 10 is formed as a ring-shaped band 11 to fit over avertically reciprocable and rotatable head block '7, engaged by the band11 and the said end, as shown, carries a steel bearing sleeve 8, whichlatter may, however, in practice, be omitted.

The head block? has two elongated recesses or slots -71, one at each endand the said slots extend across their respective ends and are arrangedat right angles to each other, and to make the head block of lightweight, the slots may extend inwardly nearly close enough to merge, asis clearly shown in Figs. 2, 6 and 7.

9 designates the motor shaft, the outer end of which extends into thehousing 3 and upon thesaid end is mounted a crank disk 12 that islocated in close relation to the inner face of the head block 7.

By referring now more particularly to Figs. 2 and 3 of the drawings, itwill be noticed a short 'bar' or member 13 seats v within the slot 70 onthe inner face of the block 7 and connects with the eccentric stud pin12 of the disk 12.

A similar member that is hereinafter termed the controller block 14seats in'the elongated recess or slot 71 in the outer face of the headblock and to such" controller block 14:, midway the ends thereof, isfixedly connected a short spindle 15 that journals in the front side ofthe housing and which carries a thumb knob 15, as shown.

To hold the said knob 15 and the head block to their adjusted position,a spring disk washer 17 is mounted upon the spindle 15 between the knoband the housing and to properly center the block 7, a similar springwasher 18 is located between the head block 7 and the inner wall of. thehousing 3, as is clearly shown in Fig. 2.

It is to be understood that the applicator or plunger arm operatesthrough a rocker bar, indicated by a? on Fig. 2 mounted in the lower endof the neck 6 to allow for the sidewise or brushing movement of the saidapplicator or plunger arm. The thumb knob 15 also serves as an indicatorfor designating the set of the transmission mechanism, the outer face ofthe housing 3 having suitable indication points a, Z), and c thatdesignate the percussion, the brushing, and the combined percussion andbrushing strokesrespectively for which the plunger may be adjusted.

From the foregoing description taken in connection with the accompanyingdrawings, the complete construction, the manner of its operation, andthe advantages of my improved vibrator construction will be readlyapparent to those skilled in the art to which my invention relates.

The connection of the controller block with the head block 7 is suchthat the said block 7 can be instantly adjusted within. the ring-likehead of the applicator or plunger 10 by turning the said knob 15.

By turning the knob 15 to the vertical position, the controller blockorbar rotates the block 7 until the said block or bar 14 is in thevertical position and the short bar 13 is at a horizontal position,thereby providing for the up and down or full percussion stroke of theapplicator.

WVhen the thumb knob is turned, in either direction, right or left, tothe horizontal position, the other member 1.3 assumes the verticalposition and owing to the peculiar connection of the head block 7 withthe said member 13 and with the applicator head portion, brushingmovement of the applicator is provided for and, by setting the thumbknob midway between the two positions mentioned, the combination ormixed stroke of the applicator is had.

lVhat I claim is:

1. In a vibrator, a support, an applicator having longitudinal andlateral bearing in the said support, a drive shaft, a connection betweenthe drive shaft and the said applicator, and means for varying thedirection of movement of the applicator, the said means including a headblock having rotatable connection and plunger movement with theapplicator, the said head block having a transversely elongated socketin that face adjacent the drive shaft, a follower mounted in the saidsocket, and crankpin and disk connections that join the drive shaft andthe follower, and means operable externally of the casing for settingthe head block to locate the follower at a horizontal, a vertical or amidway position relatively to the drive shaft, said means including atension device for holding the head block to the shifted position.

2. In a vibrator, a support that includes a housing having a neckprovided with a spherical bearing seat, an applicator arm, one end ofwhich extends through the said bearing seat and the housing and whoseother end terminates in a ring-like band, a drive shaft, a crank disk onthat end of the shaft adjacent the applicator, a power trans missionconnecting the crank disk and the applicator, said transmissionconsisting of a cylindrical head that forms the bearing connection forthe ring-like band of the applicator arm, the said head having atransversely extended elongated socket in each 'of the opposite endsthereof, the said sockets being disposed at right angles to each other,a controller block mounted in the socket in the outer face of the head,a bar held in the socket in. the other face of the head with which thecrankdisk pivotally connects midway the ends thereof, the controllerblock having an attached spindle that journals in and extends throughthe housing, a thumb knob attached to the outer end of the spindle,whereby the controller block can be turned to rotate the headto bringthe crank disk connected bar at the different positions for effectingthe desired changes of motion of the applicator, and tension devices forholding the head block to the thumb knob controlled position.

3. In a vibrator, a support,'a first motion crank shaft, a vibratorplunger arm, an oscillatable bearing in which said plunger arm isreciprocably mounted, a circular head block having a diametrical grooveon each side, one groove being extended at right angles to the other, astrap, carried by said plunger arm, in which said circular head block islocated, a slide operable in one of said head block grooves andapertured to re ceive the crank of the first motion shaft, a secondslide operable in the other groove of said head block, anv adj usting,shaft mounted in a bearing in said support andv keyed to said secondslide block, and means by which said adjusting shaft may be turned toturn said head block for purposes of adjustment and. thereby to vary thestroke of said plunger arm, and means for holding said adjusting shaftin the positions to which it is set.

(JrE( )R-GE P. ELMEN

